Integrated ADAS-Infotainment PCB With Firewall and Liquid Cooling
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Solution Overview
Problem
Conventional advanced driver assistance systems (ADAS) and infotainment systems in vehicles require separate printed circuit board assemblies, leading to increased resource usage, space requirements, and additional wiring, while also posing challenges in maintaining safety and cybersecurity requirements.
Innovation Solution
A vehicular integrated ADAS/infotainment module with first and second electronic circuitries separated by a firewall, where the first circuitry controls the ADAS and the second circuitry controls the infotainment system, and a liquid-cooled housing encapsulates the printed circuit board to manage heat and maintain functional safety and cybersecurity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate printed circuit board assemblies are used for ADAS and infotainment systems, then functional safety and cybersecurity requirements are maintained, but resource usage, space requirements, and wiring complexity increase
Solution Approach 1:
The patent combines ADAS circuitry and infotainment circuitry into a single integrated printed circuit board assembly, reducing the number of separate assemblies and wiring harnesses required while maintaining functional safety and cybersecurity through domain separation mechanisms
Solution Approach 2:
The integrated PCBA is segmented into separate domains (ADAS domain and infotainment domain) with a firewall between them, allowing each domain to maintain its security and safety requirements while sharing common resources like power supply and housing
2Device complexity
If electronic circuitry is integrated into a single module, then space requirements and resource usage are reduced, but heat generation increases requiring effective thermal management
Solution Approach 1:
The patent implements a liquid cooling system with cooling channels formed in the housing to circulate coolant through the integrated module, efficiently removing heat generated by both ADAS and infotainment circuitry while maintaining compact integration
3Reliability
If a firewall is implemented to restrict communication between ADAS and infotainment circuitry, then cybersecurity requirements are met, but communication overhead and system complexity increase
Solution Approach 1:
The patent implements a firewall as an intermediary component between the ADAS domain and infotainment domain on the integrated PCBA, allowing controlled communication while blocking unauthorized access, thus maintaining cybersecurity without complete isolation
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The integrated module reduces resource and space requirements while ensuring functional safety and cybersecurity by restricting unauthorized access between ADAS and infotainment domains, allowing for efficient heat management through liquid cooling, thus enhancing the operational efficiency of both systems.
Implementation Method 1
The housing is liquid cooled to transfer heat generated by the first electronic circuitry and the second electronic circuitry away from the printed circuit board
Data Source
AI summary
A vehicular integrated ADAS/infotainment module includes first electronic circuitry disposed at a printed circuit board and second electronic circuitry disposed at the printed circuit board. With the vehicular integrated ADAS/infotainment module disposed at a vehicle, the first electronic circuitry at least partially controls an advanced driver assistance system (ADAS) of the vehicle and the second electronic circuitry at least partially controls an infotainment system of the vehicle. A firewall restricts communication from the first electronic circuitry to the second electronic circuitry and the firewall restricts communication from the second electronic circuitry to the first electronic circuitry. A housing at least partially encapsulates the printed circuit board, and the housing is liquid cooled to transfer heat generated by the first electronic circuitry and the second electronic circuitry away from the printed circuit board.